package exception.data;

import java.util.Date;

/**
 * @Author:Cjj
 * @Date:2025/6/18
 */
public class Data {
    /**
     * 契约式编程
     * input int data
     * @param i i >0
     */
    public static void put(int i){
        assert i>0;
        System.out.println(i);
    }
}
